Coal Mine 350 Nm3/h Air Separtion Plant Engineering
(1)< Code of Design on Building Fire Protection And
(4)Current station specifications and standards for oxygen station.
Layout of equipments:
1. The strength and leakproofness test should be done after
finishing the installation of pipes,. Except the circulating
cooling water pipes employ the clean and oil-free water as the
medium to do strength and leakproofness test, other process pipes
must use dry and clean air to blow-dry after water pressure
strength test; if use the clean and oil-free air or nitrogen for
strength test, the effective safety measures should be taken.
a) Hydraulic pressure test is taken as strength test
The pressure for pipe hydraulic pressure test should be 1.5 times
of design pressure, and the test medium should be oil-free clean
water. Hydraulic pressure test should be rose slowly, when it
reaches the test pressure, keep the pressure for 10min, and then
reduce the pressure to design pressure, and keep for 30min, and it
is qualified only when there is no pressure drop and leakage.
b) Air pressure test is taken as strength test
The pressure for pipe air pressure test should be 1.15 times of
design pressure, and the test medium should be oil-free air or
nitrogen. When air pressure test, the pressure should be rose
slowly, when the pressure reaches the 50% of test pressure, there
is no unusual appearance or leakage, and then rise the pressure by
10% of pressure test step by step, keep pressure in the each step
for 3min, until to the test pressure and be kept for 10min, and
then reduce the pressure to design pressure, and the keeping time
will be based on the leakage checking work, and it is qualified
when the foaming agent is checked without leakage of air.
c) Leakproofness (gas tightness) test
The pipe leakproofness (gas tightness) test pressure should be 1.0
time of the pipe design pressure, and the test medium will be
oil-free air or nitrogen, and it is qualified when the foaming
agent is checked without leakage of air. Leakproofness(gas
tightness) test method is according to the requirement of item
3.4.3 in GB50274. Leakproofness(gas tightness) test method is
according to the requirement of item 3.4.3 in GB50274.
d) The air separation plant integral leakproofness test will be
according to the stipulations in the technical files provided by
the manufacturer. Leakproofness test method is according to the
requirement of item 3.4.3 in GB50274.
(1) Our company owns the national enterprise technical center
(2) Impeccable quality management system
(3) Powerful manufacturing capacity
(4) Our company has the strong ability for supporting, and steady
(5) Engineers available to service machinery overseas
(6) Our company is a state-owned enterprise that can give
professional consult, design, supervision, project management,
import and export trade, forming a complete set for air separation
plant, and engineering project contracting (EPC).
(7) Our company can provide the engineering design and installation
service, and technical services and after-sale equipment